3218215130 has 16 divisors (see below), whose sum is σ = 6238386504. Its totient is φ = 1188264000.

The previous prime is 3218215129. The next prime is 3218215157. The reversal of 3218215130 is 315128123.

It can be written as a sum of positive squares in 4 ways, for example, as 2466413569 + 751801561 = 49663^2 + 27419^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 3218215130.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12377621 + ... + 12377880.

Almost surely, 2^3218215130 is an apocalyptic number.

3218215130 is a deficient number, since it is larger than the sum of its proper divisors (3020171374).

3218215130 is a wasteful number, since it uses less digits than its factorization.

3218215130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24755521.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 3218215130 is about 56729.3145560565. The cubic root of 3218215130 is about 1476.4033572865.

The spelling of 3218215130 in words is "three billion, two hundred eighteen million, two hundred fifteen thousand, one hundred thirty".